Eruption

Aerial picture showing the cloud of ash billowing from Puyehue volcano near Osorno in southern Chile, 870 km south of Santiago. Puyehue volcano erupted for the first time in half a century on June 4, 2011, prompting evacuations for 3,500 people as it sent a cloud of ash that reached Argentina....

Aerial picture showing the cloud of ash billowing from Puyehue volcano near Osorno in southern Chile, 870 km south of Santiago. Puyehue volcano erupted for the first time in half a century on June 4, 2011, prompting evacuations for 3,500 people as it sent a cloud of ash that reached Argentina.... (Getty Images)

Aerial picture showing the cloud of ash billowing from Puyehue volcano near Osorno in southern Chile, 870 km south of Santiago. Puyehue volcano erupted for the first time in half a century on June 4, 2011, prompting evacuations for 3,500 people as it sent a cloud of ash that reached Argentina....Getty Images